References for the AA4 example simulation

Farooq, S.; Ruthven, D.M. Numerical simulation of a kinetically controlled pressure swing adsorption bulk separation process based on a diffusion model. Chem. Eng. Sci. 1991, 46, 2213–2224.

Hassan, M.M; Ruthven, D.M; Raghavan, N.S. Air separation by pressure swing adsorption on a carbon molecular sieve. Chem. Eng. Sci. 1986, 41, 1333–1343.

Ergun, S. Fluid flow through packed columns. Chem. Eng. Prog. 1952, 48 (2), 89–94.